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Wastewater Sampling Articles

A leading international wastewater instrumentation manufacturer is now using peristaltic pumps from Verderflex as part of the wastewater sampler systems it manufactures. The pumps provide reliable and accurate performance which helps the Hydrocell sampler systems produced by Halifax-based Smart Storm to measure the volume and toxicity of wastewater effluent. As a leading provider of water ...

This study evaluated the use of particles of molecularly imprinted and non-imprinted polymers (MIP and NIP) as a wastewater treatment method for endocrine disrupting compounds (EDCs). MIP and NIP remove EDCs through adsorption and therefore do not result in the formation of partially degraded products. The results show that both MIP and NIP particles are effective for removal of EDCs, and NIP ...

Left-censored datasets of virus density in wastewater samples make it difficult to evaluate the virus removal efficiency in wastewater treatment processes. In the present study, we modeled the probabilistic distribution of virus removal efficiency in a wastewater treatment process with a Bayesian approach, and investigated how many detect samples in influent and effluent are necessary for ...

Five municipal and domestic wastewater treatment plants, most of which had secondary treatment systems formed by activated sludge, were studied during 2013–2014 in Tehran. The study was done in order to evaluate their efficiency in terms of removal of Cryptosporidium and Giardia by (oo)cyst recovery in effluent samples using immunofluorescence with monoclonal antibodies. ...

Efficient decomposition of pharmaceuticals through ozonisation Roche AG had commissioned the company Envi-roChemie to develop a new procedure for a new production facility in Mexico, which prevents the undesired release of ecotoxicologically contaminating drugs into the environment and eliminates pharmaceuticals in the wastewater directly at the point of origin, even before they enter ...

Preliminary This service was made according to customer order points and indications from Hydrolab Microbiológica (Surcis collaborator) The client wanted Surcis to carry out a study about COD fractioning and nitrification. For this study the client has provided to Surcis the following: Process type: Activated sludge - Extended aeration 2 ...

Reliable estimations of the evolution of water quality parameters by using in situ technologies make it possible to follow the operation of a wastewater treatment plant (WWTP), as well as improving the understanding and control of the operation, especially in the detection of disturbances. However, ultraviolet (UV)–Vis sensors have to be calibrated by means of a local fingerprint ...

The hydrolysis process of slowly biodegradable substrate (XS) has an impact on the efficiencies of nutrient removal in activated sludge systems. Measurement of oxygen utilization rates (OURs) and corresponding chemical oxygen demand (COD) is accepted as a very useful tool to reflect the consumption of biodegradable substrates. The influence of the SS ...

Phosphate detection in water samples is still completed using colorimetric standard methods, which have a number of disadvantages, to such as being time consuming, requiring filtration, a number of different reagents, frequent calibration and proper disposal of waste chemicals generated. Hence, a simple cost effective analytical method and instrumentation is highly desirable to aid the ...

In this study at first, the most suitable networks of ANN and MNLR models were constructed based on experimental datasets from a laboratory batch mode. Five ANN and MNLR models comprising various combinations of operational parameters were developed. The results showed that ANN5 model characterised by Levenberg–Marquardt learning algorithm and tangent activation function, which used all input ...

The visible and near infrared spectroscopy is a fast and inexpensive non-destructive technique for the prediction of concentrations of salts in wastewater. Conventional chemical methods are usually used, which are very accurate, take more time and require special techniques for sampling, storing and pretreatment of wastewater. In this work we studied the spectral characteristics of water and the ...

In the present study, we investigated the effects of bisphenol A, chlorpyrifos, methylparaben and 2 effluent samples from wastewater treatment plants located in the province of Madrid (Spain) on the mRNA expression of specific genes involved in early development (ESR1, pax6, bmp4 and myf5) and a gene involved in general stress response (hsp70) during Xenopus laevis embryo development. Gene ...

Northern Ireland Water is the sole provider of water and sewerage services in Northern Ireland. It is a Government Owned Company (GoCo) established in April 2007 to serve approximately 795,000 domestic, agricultural, commercial and business properties connected to the public water supply and 660,000 properties connected to the public sewer system. Every day Northern Ireland Water (NI Water) ...

A total of 50 Finnish bathing water samples and 34 sewage effluent samples originating from 17 locations were studied in the summers of 2006 and 2007. Campylobacter were present in 58% and adenoviruses in 12% of all bathing water samples; 53% of all sewage effluent samples were positive for Campylobacter spp. and 59% for adenoviruses. C. ...

The stability of 24 chemicals, including pharmaceuticals and personal care products, and some agrochemicals on extraction media was evaluated by preloading them onto Oasis hydrophilic lipophilic balanced solid‐phase extraction (SPE) cartridges and polar organic chemical integrative samplers (POCIS) followed by storage at −20°C over time. After 20 months, the average loss was 11% on POCIS, with ...

Problem with high wastewater charges because of high COD and suspended solids readings, which were dramatically reduced using BioAmp. Thwaites Brewery Daniel Thwaites is a large independent Brewery based in Blackburn, UK. The Brewery is located in the centre of the city and neighbours commercial, industrial and residential areas. The Brewery operation includes ...

Targeting TSS and Achieving Clarity The wastewater sample when received was a pH of 10.3. The request for a wastewater solution was to remove TSS and obtain better water clarity. Various Floccin blends were used until the water clarity was acceptable. Better results were obtained combining the two types of wastewater and performing the jar test. The recommended ...

Northern Ireland Water (formerly Water Service) is the sole provider of water and sewerage services in Northern Ireland. It is a Government Owned Company (GoCo) set up in April 2007 to provide the water and sewerage services in Northern Ireland. There are approximately 795,000 domestic, agricultural, commercial and business properties in Northern Ireland connected to the public water supply and ...

U.S. EPA Method 200.8 contains a lengthy, detailed description of procedures, both required and recommended. A summary of the experiments that must be performed to establish the performance of the instrument, along with a 10-step daily analysis procedure, can be found in Table 1 (Page 2). Instrumental Conditions A PerkinElmer® ELAN® 9000 ICP-MS was used for the ...

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